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The correct answer to the question is option-4, ARYABHATTA. The Aryabhatta satellite was the first geostationary telecommunications satellite of India. Geostationary satellites are positioned in such a way that they remain fixed in the same position relative to the Earth`s surface, allowing for uninterrupted communication.
Option-1, INSAT-IA, is incorrect because INSAT-IA was the first in a series of satellites launched by India for various purposes, but it was not the first geostationary telecommunications satellite.
Option-2, APPLE, is incorrect because APPLE stands for Ariane Passenger PayLoad Experiment, which was a satellite developed by the European Space Agency (ESA), not India.
Option-3, ROHINI, is incorrect because Rohini was not a geostationary telecommunications satellite. It was the name given to a series of experimental satellites launched by the Indian Space Research Organisation (ISRO) for research and development purposes.
Therefore, the correct answer is option-4, ARYABHATTA.